information in america. >> this simple lecture by professor robert lustig of the university of california-san francisco has been viewed nearly 3 million times. the basic message, sugar is toxic. at least in the massive amounts most of us eat it. >> can your liver handle it, and the answer is, no it can't. >> the average american eats 130 pounds of sugar in a single year. that includes the white stuff. but in case you're curious, also the high fructose corn syrup. lustig says for most people it makes no difference. of course, the sugar growers and the corn growers say sugar is like anything else. fine. in moderation. and that's true. but it's not the whole story. and now dr. robert lustig joins us. he's written a new book. in his spare time. it's called "fat chance: beating the odds against sugar, processed foods, obesity and disease." with regard to sugar, and you've talked about the fact that sugar, sweets and stuff, can be bad for your heart. it can ultimately get turned into this very bad sort of cholesterol particles. what happens? you think of fatty foods doing that. but a sugary drink?